In addition to the flues, steam is also employed as a medium of communicating heat. But the apparatus was erected chiefly as matter of patriotism, when steam first came in vogue, and is on a very imperfect plan, and of little real use. The boilers are placed over the furnaces, and the same fire which heats the water of the boiler, passes along the flue; the steam tube of the boiler is laid on the top of the flue, and extends no farther than it extends. It is evident, therefore, that scarcely any advantage can result from the use of the boiler, unless it be that the heat is thus sent more effectually to the opposite end of the house to that at which the fire enters, or that the vapour is very readily admitted from the steam-pipe to fill the air of the house. None of these advantages, however, will compensate the expense of the apparatus; the first is hardly wanted where houses are placed in a connected range, as the two outside ends of the houses are kept warm by the flues entering there; and in the other houses a warm end is placed against a cold one. _Soil._ At first, Mr. Oldacre used good sound loam and dung, with a little sand, when he found it necessary; but he has for the last four years grown his fruiting plants chiefly in powdered bones, in which he thinks they thrive better, and produce more highly-flavoured fruit. We have not, however, been able to discover any thing in the appearance of either fruit or plants, to lead us to suppose that powdered bones are more congenial to the Pine plant than good loam and dung; his plants are certainly not equal to Mr. Baldwin’s, nor superior to those grown by Mr. Andrews, or Mr. Aiton. We, therefore, consider their thriving in this compost a proof more of the hardy nature of the Pine, than of any thing else; we have no doubt it would grow in powdered granite, or coal, or almost any powder, not even excepting gunpowder, if a due proportion of well-rotted manure were added, and water, heat, light, and air, duly supplied.